Ferroelectric/paraelectric superlattices for energy storage

Abstract

The polarization response of antiferroelectrics to electric fields is such that the materials can store large energy densities, which makes them promising candidates for energy storage applications in pulsed-power technologies. However, relatively few materials of this kind are known. Here we consider ferroelectric/paraelectric superlattices as artificial electrostatically-engineered antiferroelectrics. Specifically, using high-throughput second-principles calculations, we engineer PbTiO${}_3$/SrTiO${}_3$ superlattices to optimize their energy-storage performance at room temperature (to maximize density and release efficiency) with respect to different design variables (layer thicknesses, epitaxial conditions, stiffness of the dielectric layer). We obtain results competitive with the state-of-the-art antiferroelectric capacitors and reveal the mechanisms responsible for the optimal properties.

8 pages, 5 figures

References in corpus (5)

• Subterahertz collective dynamics of polar vortices
• A phononic switch based on ferroelectric domain walls
• Efficient systematic scheme to construct second-principles lattice-dynamical models
• Rotational polarization nanotopologies in BaTiO3/SrTiO3 superlattices
• Ultrahigh energy storage density in epitaxial AlN/ScN superlattices

Cited by in corpus (8)

• Brownian electric bubble quasiparticles
• Topological phase transitions in perovskite superlattices driven by temperature, electric field, and doping
• Liquid-crystal-like dynamic transition in ferroelectric/dielectric superlattices
• Octahedral Rotation Induced, Antiferroelectric-like Double Hysteresis in Strained Perovskites
• Energy storage properties of ferroelectric nanocomposites
• BaTiO${}_3$ -- SrTiO${}_3$ composites: a microscopic study on paraelectric cubic inclusions
• Point defect design in (Ba,Sr)TiO${}_3$ -- an insight on agglomeration
• Elastic amplification from negative capacitance